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Abstract: Under the assumption that a quantum computer can exactly copy quantum superpositions, we show that NP-complete problems can be solved probabilistically in polynomial time. We also propose two methods that could potentially allow to avoid the use of a quantum copymachine. (Update)
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BibTeX entry: (Update)
@techreport{ hirvensalo98copying,
author = "Mika Hirvensalo",
title = "Copying quantum computer makes {NP}-complete problems tractable",
number = "TUCS-TR-161",
month = "13,",
year = "1998",
url = "citeseer.ist.psu.edu/530604.html" }
Citations (may not include all citations):5 Feynman: Simulating Physics with Computers (context) - Richard - 1982
5 Grover: A fast quantum mechanical algorithm for database sea.. (context) - Lov - 1996
4 Vazirani: Strengths and Weaknesses of Quantum Computation (context) - Bennett, Bernstein et al. - 1994
2 Ross: Introduction to probability models (context) - Sheldon - 1989
2 Hillery: Universal optimal cloning of qubits and quantum reg.. (context) - Buzek - 1998
2 Licentiate's Thesis (context) - Hirvensalo, Computation - 1997
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